I want to run that Stihl HP oil but it says it degrades to 80% in 30 days or something like that. I go though about a gallon of 2 stoke gas in about a month and a half. Does this mean my last couple pours will be mostly gas and no oil? Am I better off running Stihl's orange bottled dino stuff? I currently run Opti 2 at the 100:1 and I'm not too happy with it. I've had to lean out my equipment to the leanest setting. (Screw all the way out) for them to run WOT without hesitation. When I called and talked to Opti about this they mentioned this would happen because there is more gas in the mixture vs oil. But still, my Stihl blower would accually like it leaner then I can go so I'm on a quest for a new oil. I imagine I could run double the opti oil? Smart move or go for the stihl oil?